Leather-skiving machine.



J. O. PRIMS.

LEATHER SKIVING MACHINE. APPLICATION FILED 1111.11.31, 1914.

Patented Feb. 9, 1915.

2 SHEETS-SHEET 1 ATTORNEY J. C. PRIMS.

LEATHER SKIVING MACHINE.

APPLIOATION FILED Mmml, 1914.

Patented F61). 9, 19m.

2 SHEETS-SHEET 2 I 'QJbSeph/QPI NlTN ESSES ATTQ R EY tinrrnn snares Parana oarron. I

JOSEPH C. PRIZE/IS, OF HORNELL, NEW YORK, ASSIGNOR TO SWIFT MACHINERY FAGTURIING COMPANY, OF HORNELL, NEW YORK, A CORPORATION OF NEW YORK.

LEATHER-SKIVING amcnmn.

anemia.

Specification of Letters Patent.

Patented Feb. 9, 1915.

Application filed March 31, 1914.. Serial No. 828,640. I v

To-allu'iwmit may concern: Be it known that 1, Jose h C. Pants, a citizen of the United States, residing at Hornell, in the county of Steuben and State of Xew -York. have in ented a new and useful Leatlir-Skiving Machine, of which the following is a specification.

This invention has'reference to improvements in leather skivinfg machines, and is designed more particularly for bevelingthe ends of strips of belting in order to Join them.

The machine of the present invention permits the formation of splices of different lengths. so that the junction of the belting may be made as strong as desired and without waste.

The machine of the present invention comprises a holding member with a movable part mounted to turn about an axis with a belt carrying pcrtion movable into different degrees of eccentricity to the axis of movement of the belt. the leather being moved into proper relation to a knife or cutter so arranged as to cut through the thickness of the belt at a rate with relation to the longitudinal moi ement of the belt to produce a long bevel cut arying in length in accordping the belt so that when'the machine is set to make a skiving cut of a certain length there will be no variation in the out due to s ippage of the belt.

The invention .will be best understood fr m a consideration of the following detailed description. taken in connection with the accompanying drawings forming a part of this specification. with the further un derstanding that while the drawings show a practical form of the invention. the latter is not confined to any strict conformity with the showing of the drawings. but may be changed and m dified so long as such changes and modifications mark no material depa ture from the sa ient features of the invention.

in the dra\vings:l igure 1 is a front eleation 'with the parts in operative position t pr duce a cut of a determined length. Fi i. is a i ertical secti n ack of the face plate. Fin 3 is a plan i w of the m chine in the position shown in Fig. 1. Fig. 4 is a section on the line 1-4 of Fig. 1, some. parts be ng shown In elevation. Fig.v 5 isfa section on the line 55 of Fig. 1 with some parts in elevation. Fig. 6 is a section on the line 6-6 of Fig. 2.

Referring to the drawings, there is shown a clamp, 1 carrying a clamp sgrew 2 and provided with supporting feet-3, whereby the clamp may be made fast to support ing member represented at 4. and which may be indicative of a bench ortable or other support. The clamp member is formed with a post or standard 5 which in operative position is customarily upright, and is formed into a face plate 6 having a central boss 7 on what constitutes its rear face, and through this boss and face plate there is formed a passage 8 concentric therewith. On top of the face plate and to one side of its upright diameter. there is formed a shelf or table 9 with an upstandingrib 10 along the edge remote from the upright diameter of the face plate. On the other side of the uprightdiameter the top of the standard is formed with :1 lug 11 centrally bored for a purpose which will presently appear. There is also provided ancther disk-like plate 12 having oppositely directed axial extensions 13. 14, respectively, the extension 13 fitting the passage 8 and both being cylindrical so that the extension 13 constitutes a. spindle upon which the plate 12 mayturn. This spindle is of a length to extend beyond the end of the boss 7 remote from the faceplate 6 and there receives a sleeve 15 formed on one end of a lever 16 terminating at the other end in a handle 17, the sleeve 15 being held to the spindle 13 by a key 18, so that movements of the lever 16 are participated in by the spindle 13 and disk 12. The ban: die is held to the spindle by a washer 19 and screw 20 in the particular construction shown, but it will be understood that these parts may be otherwise formed, if desired, so long as they perform their designed functic-ns.

The axial extension 11 is longer than the extension 13. and has a reduced outer end 21 upon which is mounted a sleeve 22 abutting at one end against a shoulder '23 formed by the reduced extremity 21. and 5 this slee e is held on .the portion 21 bya plate '24 and screw '25. The plate 2-1. mm stitutes the front plate of the machine, and

' is supported on opposite sides of the axial extension 14 constituting a spindle by screws '26, 27, respectively, the screw 26 being tapped into the outer end of a rod 28 cared by the disk 12 near one margin, and the" screw 27 being tapped into a lug 29 -gfo. rmed on and extending-from a bracket which may be in one piece with "the disk I in offset relation to the periphery thereand which bracket furthermore carries a .irod or'pin 31 which together with the lug 29 extend'toward the front of the machine in substantially parallel relation to the spindle 14 and .rod 28, the spindle 14, rod 28 and lug 29 being all of'substantially the same degree of projection from the disk 12.

"The front plate 24has a peripheral portion 32 eccentric to the axis of the dsk 12 v and isformed with an outstanding rib 33 which for cbnvenien ce of adjustment of certain parts has spaced notches 34 formed thereinf'and adjacent to these notches are certain indieia such as numerals 35, which latter and'the notches, as will presently appear,-:=aid' an operator in positioning certain parts during. the operation of the ma- .jcch ine.y 3

" Mounted atone end of the rod 28 between the disk 12 and the-front plate 24 is a subgio stantially semi-cylindrical bed plate 36 havfzings'the end mounted on the rod 28 enlarged,

-' as;show1rat-37, to'provide for a bore orpassage receiving the rod 28,. and-this plate is of an axial length to fit snugly-yet freely '35 between themarginal portion of the disk 12 and the front plate 24.. 'The'bed plate Q36- may include more than a semi-cylinder or vmay be of'vles's extent'so long asit percforms .the1 func tions for which it is de- "49 signed. On the inner face and about midway-of the axial length ofthe bed plate 36 herefis' provided a circumferentially exended ribi- 38- having an'inner edge '39 made eccentric to theaxis' of generation of the bedgplate, the radial thickness of the rib 38 I ine-teasing from. the enlargement 37 toward th opposite edge of the bed plate, and this ribithere terminates in ashoulder 40.

,Formed'on the sleeve 22 isa radial finger 5 41- shaped. at its outer end to engage the inner peripheral portion "of the rib 38'so that when the 1 sleeve 22 is rocked upon the spindle 14 the finger'41 is moved along the rib 38 and'because of the eccentricity of the latter, w ill'rock the bed plate 36 on its supporting rod 28, thereby causing the bed plate to assume different positions of ec centricity with relation to the axis of the disk 12, and since this bedvplate is carried a) by the disk it will-in turn move with the diskwhen the latteris rocked bymeans of the lever 16. The sleeve 22 is provided with a jmanipulating handle 42, which in theQjipa-rticular arrangement shown in the draw rigs depends from the sleeve 22 close to the front plate 24 and may readily be set in different ositions with respect to the numerals 35. y making the sleeve 22 to fit rather snugly between the shoulder 23 and the front plate 24, itwill hold its different positions of adjustment frictionally.-

The shelf or table 9 serves as a sup ort for a knife or blade 43 closely overri ing the disk 12 with the cutting edge of the knife in operative relation to the bed plate 36, the knife having a shank portion 44 held to the table 9 .by screws 45, and the table may be finished true .to support the knife in sufficiently true relation to the axis of rocking of the bed plate 36 to serve the purposes of the present invention.

The lug 29 is shaped on one face 46 to serve as afixed clamp member to which is opposed an eccentric clamp member 47 having a body portion 48 longitudinally bored and traversed by the pin 31 constituting a pivot support for the clamp member 47; the pin 31 having a permanent head 49 at one end and a lock nut 50 at the other end, the pin extending through the bracket 30 and held firmly thereto by the lock nut 50. The clamp member 47 is provided with a manipulating handle 51 extending therefrom, and in order to increase the hold of the clamp member, blocks 51 of some softer metal than iron or steehare inset into the body member 48 at suitable intervals.

The lug 11 carries a pivot pin 52 extending over the disk 12 and bed plate 36 in substantially parallel relation to the .pin 28 and mounted on this pin is a rocker struc-- ture 53 having terminal arms 53 in radial relation to the axis of rocking and located I near the ends of the rocker member 53 and mounted in the outer ends of these arms is a roller 54 immediately in front of the cutting edge of the knife 43 and having, a normal tendency, when in operative position, toward the bed plate 36.- This rocker member is manipulated by a handle 55 and in order to prevent it from moving beyond a certain distance in one direction, itcarries a pin 56 in position to en a e the eri her of the disk 12. g p P 1 If it be desired to make a bevel cut in piece of belting, indicated at '57., in Figs. 1 and 2, the belt is laid upon the bed plate 36 with the end where the cut is to terminate reaching close to the .pivot 28 of the bed plate, and the belt is also carried between the lug 29 and. the clamp portion of the clamp member 47, whereupon the'belt is firmly secured by the clamp members 29 and 47. The bed plate 36 is adjusted to the desired degree of eccentricity with the axis of rocking of the disk 12 by a suitable movement of the sleeve 22 and finger 41, this movement being determined by the position of the handle 42 with reference to the numbers 35. In the particular showing'of the mantra.

dn'awing is about midway between the niunbers'three and four, indicating that thebeveled or" skiving cut; will be about three and one-half inches long, the arrangement between the numbers three and four. The

roller 54 serves to hold the belt to the bed 1 plate immediately in front of the cutting I edge of the knife Without at all rubbing the belt, but readily. rolling therealong, the

overhanging weight of 'the roller 54 and handle being sufiicient for the purpose. Now, by grasping the handle Hand movmg the lever 16 toward the right as viewed in llli'gs. 1 and 2, the'bcd plate36 slowly 'approaches the cutting edge of the knife as the end 37 of the bed plate 36 moves toward the cutting edge of the knife, and-consequently theubelt on the bed plate is correspondingly raised, as it approaches the knife, wherefore the latter moves through the belt until it. reaches the inner face of the beltadjacent to the rod or pin .28. If a longer cut 'e desired. the. bed plate 36 is adjusted correspondingly; and the knife 43 will enter the belt at a greater distance from the pivot rod '28, but the termination of the cut will be as before adjacent to the rod 28, so that the bevel cut is longer considering the belt as the same thickness as before.

What'is claimedfis:- a

1. In aleather. skiving machine, a supporting member movable about v an axis, a bed plate pivotally mounted atone end on Said member to one side of theaxis' of movement thereof, a fixed cutter in operativerelation, to thebed plate-and an adjusting member for the lied plute movable-about the .am's of movement of the supporting mem-- her, the bed'plate' being provided with a,

part in eccentric'relation to the.axis of movement of the supporting member and located in coactive-relat-ionto the adjusting 55 member for adjustment of the bed plate in different positions of eccentricity with relationto the supporting members 1 In a leather skiving machine, a porting member movable about;an axis, a

' bed plate pivotallv mounted at one end on said member to one side of the axis of move mentthereof; a fixed cutterin operative re lation' to the bed plate, and an adjusting member foi thebed plate movable about the axis 'of mo ement of the supporting member, the bed plate being provided with a part in eccentric relation to the axis of movement of the supporting member and lo cated in coactive relation to the adjusting memb'eiz'for adjustment of the bedv platd in different positions of eccentricity with rela- I tion to the; supporting member, said suoporting member being-f' provided with clampingmeans f or, the leather to be treated, and with ,amapipulating handle separate from and independent of the clamping means for causing movement of the sup porting member with referencc to the cutter.

3. In a leather skiving machine, a rockable supporting member, a bed plate eccentrically mounted thereon, a. front plate carried by the supporting member and confining the bed plate theret0,- and means for of eccentricity with relation to the axis of the supporting member, said-means and the front-plate having coacting portions for indicating predetermined degrees of eccentricit'yjof the bed plate.

l. In a leather skivin'gzmachine, a body' member, a cutter mounted thereon, a rockable'member carried by the body member and provided withfa manipulating handle, said rockable member having an offstanding clamping device for the leather to be treated, a bed plate pivoted at one end to the rockable member ineccentric relation thereto and terminating at the other end adjacent to the clamping device, a front plate on the rockable member for holding the bed plate thereto, and an adjusting means for the bed plate also carried by the rockablememher and movable with reference 0 the bed plate to adjust it into different positions of eccentricity to the movements of the rockable member, the adjusting means and the front plate having co-acting portions for indicating the positions of eccentricity of the plate to produce different lengths ofcut. f

5. In'a leather skiving machine, a body, member, a cutter mounted thereon, a rockable member carried by the body member and provided Witha manipulating handle, said'rockable member having an ofistanding moving the bed plate into dillerent'positions j rcckable member'for holding the bed plate thereto, andan adjusting nieans forlhe bed plate also carried by the'rockable member and movable with reference to the bed plate to adjust it into difi'erent positions of eceentricity to the movements of the rockable member, the adjusting means and the front plate havingcoacting portion's'for indicat--' ingthe positions of eccentricity of the bed plate toproduce different lengths of cut,

the machine being also provided with a I gravity pressuredevice adjacent to the cutter and in operative relation to the bed plate.

; 6. Amachine for skiving leather comp'rising a body member, a cutter fixed thereon,

a gravity pressure roller mounted on the body member and having a normal tendency to operative position, a rockable ,member having axially arranged spindles on opposite sides with onespindle mounted in the body member, a manipulating handle carable member, and said manipulating device and bed plate having coacting. members for varying the eccentricity-of the bedlplate, and .a clamp carried by the rockable. memher and having means for its manipulation separate from and independent of the means for imparting rocking movements to the rockable member. I v

7. In a leather skiving device, a rockable member provided with clamping means for the leather to be treated, a knife in fixed position with reference to the rockable memher, a bed plate eccentrically mounted, on the rockable member, said bed plate having an eccentric rib thereon, and adjusting meanslfor the bed plate having'a finger movable concentrically 'With the rocking member and into engagement with the eccentric flange of the bed plate.

able member, a partly cylindrical bed plate mounted eccentrically on the rocking memher, said bed plate having an inner eccentricrib, an adjusting member for the bed plate having a finger movable concentrically with relation to the rockable member and into engagement with the eccentric 'rib on the bed plate, a cutter in operative relation to and fixed with reference to the rockable member and bed plate, a clamp carriedby the rockable member for holding the leather to be treated, and gravity pressure means in operative relation to the bed plate and cutter for holding the leather to be treated adjacent to. the cutting edge of the cutter.

9. A machine for skiving leather comprising a mainstructure, a disk having 0ppositely disposed axial spindles of which one is mounted in the main structure for fbeingprovided With projecting members on i the rocking of the disk thereon, said disk opposite sides of the other spindle and with a peripherally located bracket, a front plate carried'by the projecting members and by the second-named spindle, a partially cylindrical bed plate mountedupon one of the projecting members and movable thereon in eccentric relation to the axis of the disk, said bed plate having an eccentric rib on its inner face, a sleeve mounted for rocking on the second'named spindle and provided 'i'vith a finger in operative relation to the rib on the bed plate, a clamp member mounted f .on the peripheral bracket of the disk in so.

operative relation totheother one of the projecting members to clamp theleather to set material of greater gripping eflect than-f betreated thereto, said clamp member hav- 'ing its engaging portion provided with inthe main body of the clamp member, a knife mounted onthe main body of the structure in operative relation? to the. bed plate, a pressure 'memb'er mounted on the main structure in operativefielationto the knife and bed plate, and a handle mountedion the first-named spindle for imparting movements to the disk. 10. {A machine forj'skiving positely' disposed axial spindles ofwhich one isv mountedin the main structure'for therocking of the diskthereon, said disk leather com prising'a main structure, a disk having opbeing provided with projecting members on opposite sides of the other spindle and with a peripherally located bracket, afront plate carried by 'the projecting members and by 8. In a device for skiving leather, arocka finger in operative relation to the rib set material'of greater gripping effect than the main body'of the clamp member, a knife mounted on the main body of the structure in operative relation to the bed plate, a pressure member mounted on the main structure in operative relation to the knife and bed plate, anda handle mounted on the first-named spindle for imparting rocking movements to the disk, the sleeve carrying the finger having a. manipulating handle and the front plate having indicia thereon cooperating with the handle to position the leather for predetermined lengths of cut through the leather. to be treated.

11. In a leather skiving machine, means for producing an elongated bevel cut in the leather to be treated, and means for clamping the leather during the cutting operation comprising a member for receiving the leather, and a meta-l'clamp member in operative relation. to the leather receiving means and provided on its engaging face with I blocks of softer metal than the remainder of theengaging face.

12in a le'ather skiving machine, a supporting member, a bed plate pivotally mounted at one end on said member, a cutter in operative relation to the bed plate, the cutter and bed, plate being movable one With relation to the other to produce a skiving cutin leather carried by the bed plate. and an adjustable member forthe bed plate rockable about a supporting axis, and said 'bed plate being provided with a part in 90- In testimony that I claim the foregoing centric relation to the axis of movement of as my own, I have hereto afllxed my signathe QdJHStflble member and engaged by the ture in the presence of two witnesses.

latter for adjustment of the bed plate into JOSEPH C. PRIMS. 5 diiferent positions of eccentricity with re-, Witnesses:

lation to the relative movements of the cut- J 011x BODENSTAB,

ter and bed plate. E. J. SmTH. 

